5ab²-{2a²b-3【ab²-2(2ab²+a²b】)},其中a,b满足|a+1|+(b-2)²=0

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 23:51:01
5ab²-{2a²b-3【ab²-2(2ab²+a²b】)},其中a,b满足|a+1|+(b-2)²=0
x)3MLRS64}wQ"ka\#Oq{:uۓku^bDmm$Nr["}zZ_`gCwJ$@@nl- h$c4&`ҚZ5-4Dm׊&Qd1\ LBCPDע°ff&$}|V˳5^{l @ @m

5ab²-{2a²b-3【ab²-2(2ab²+a²b】)},其中a,b满足|a+1|+(b-2)²=0
5ab²-{2a²b-3【ab²-2(2ab²+a²b】)},其中a,b满足|a+1|+(b-2)²=0

5ab²-{2a²b-3【ab²-2(2ab²+a²b】)},其中a,b满足|a+1|+(b-2)²=0
|a+1|+(b-2)²=0
a+1=0,a=-1
b-2=0,b=2
5ab²-{2a²b-3【ab²-2(2ab²+a²b】)}
=5ab²-[2a²b-3(ab²-4ab²-2a²b)]
=5ab²-(2a²b-3ab²+12ab²+6a²b)
=5ab²-8a²b-9ab²
=-4ab²-8a²b
=-4x(-1)x4-8x1x2
=16-16
=0
不懂的欢迎追问.